Misplaced Pages

#648351

23-415: Rohr's main product line are aerostructures , such as engine -related components, including engine nacelles , thrust reversers , and mounting pylons for military and commercial aircraft. It also consults on integrating and managing its designs with the other aircraft systems. Other products include auxiliary power units , flight control surfaces, and other aircraft parts. Frederick H. Rohr , creator of

46-639: A Transbus design, which evolved into the Model 870 Advanced Design Bus, as well as the later Flxible Metro , which addressed all of the shortcomings of the Model 870. Rohr divested itself of, or discontinued those programs by the late 1970s. Rohr Industries became Rohr, Inc. in 1992. It was listed on the New York Stock Exchange under the ticker symbol RHR , until it merged with the Goodrich Corporation in 1997 and remained

69-439: A universal tester , universal tensile machine , materials testing machine , materials test frame , is used to test the tensile strength (pulling) and compressive strength (pushing) , flexural strength , bending , shear , hardness , and torsion testing , providing valuable data for designing and ensuring the quality of materials . An earlier name for a tensile testing machine is a tensometer . The "universal" part of

92-458: A separately incorporated company as Goodrich Aerostructures . In August 2012, United Technologies Corporation (UTC) purchased Goodrich Corporation and all its divisions. After the acquisition, UTC created an aerospace systems division, United Technologies Aerospace Systems (UTAS), into which all divisions of Goodrich Corporation and UTC's Hamilton Sundstrand divisions were incorporated as one entity. On 26 November 2018, United Technologies announced

115-475: A wide range of applications, including tensile, compression, and flexural testing. On the other hand, hydraulic UTMs are capable of generating higher forces and are often used for testing high-strength materials such as metals and alloys, where extreme force applications are required. Both types of UTMs play critical roles in various industries including aerospace, automotive, construction, and materials science, enabling engineers and researchers to accurately assess

138-414: Is a component of an aircraft 's airframe. This may include all or part of the fuselage , wings , or flight control surfaces. Companies that specialize in constructing these components are referred to as "aerostructures manufacturers", though many larger aerospace firms with a more diversified product portfolio also build aerostructures. Mechanical testing of the individual components or complete structure

161-424: Is carried out on a Universal Testing Machine . Test carried out include tensile, compression, flexure, fatigue, impact, compression after impact. Before testing the component, aerospace engineers build finite element models to simulate the reality. Airplanes designed for civilian use are often cheaper than military aircraft. Smaller passenger airplanes are used for short distance, transcontinental transport. It

184-410: Is more cost efficient for airlines and there is less demand for aircraft transportation at these distances as people can, while inconvenient, drive these distances. While bigger airplanes are manufactured for intercontinental transport, so more passengers can be carried at one time, money can be saved on fuel, and airliners do not have to pay as many pilots. Cargo planes are usually built to be bigger than

207-408: Is placed in the machine between the grips and an extensometer if required can automatically record the change in gauge length during the test. If an extensometer is not fitted, the machine itself can record the displacement between its cross heads on which the specimen is held. However, this method not only records the change in length of the specimen but also all other extending / elastic components of

230-883: The San Francisco Bay Area , and the first 300 subway cars for the Washington Metro , among others. It was also the United States license holder of the Aérotrain . In 1970 it produced an experimental Aérotrain design, the TACV, and purchased the rights to the Monocab design and turned it into the ROMAG . In the same year it acquired the Flxible Company, a bus manufacturer, which would produce

253-502: The aircraft is important, but the precision of the measurements of the aircraft is also important. The new methods and testing require a wide variety of material properties, even though weight is very important when choosing a material. Additionally, there is a new method for research, called Thermography , that uses infrared light to look at computer simulated damage to the material and the structure of an aircraft to see how it holds up. They can use this to look at materials and evaluate

SECTION 10

#1732786716649

276-423: The average jet. They have a lot of space and large dimensions, so they can carry a lot of weight and a large volume of cargo in one trip. They have large wingspans, a very large cargo hold, and a very tall vertical fin. They are not built to accommodate passengers except for the pilots, so the use of the cargo hold is much more efficient. There does not need to be room for seats and food and bathrooms for everybody, so

299-489: The companies made a design that optimizes the space in the aircraft. The YC-14 Prototype was a prototype plane that was being designed by Boeing specifically for the US Air Force . There were a lot of different designs that were considered and different technologies that were used specifically for carrying tanks and paratroopers. There was a computer that was installed and a very powerful vertical wing that could keep

322-609: The completion of its Rockwell Collins acquisition, after which it merged its newly acquired business with UTC Aerospace Systems to form Collins Aerospace . UTC merged with the Raytheon Company in April 2020 to form Raytheon Technologies . Rohr is a wholly owned unit of the Collins Aerospace division of Raytheon Technologies. UTC sold its UTC Power unit in early 2013 to Oregon-based ClearEdge Power . UTC sold

345-496: The former Goodrich electric power systems to Safran for $ 400 million. This was a divestiture that was a condition of UTC's 2012 acquisition of Goodrich. Pratt & Whitney 's Rocketdyne operations were sold to jet engine maker GenCorp for $ 550 million in mid-2013. Three former Hamilton Sundstrand businesses, Milton Roy , Sullair and Sundyne , were sold to private equity firms BC Partners and The Carlyle Group for $ 3.46 billion. Aerostructure An aerostructure

368-466: The fuel tanks for Charles Lindbergh 's Spirit of St. Louis , founded Rohr Aircraft Corporation on August 6, 1940 with the help of Reuben H. Fleet after approaching him for a job. The company incorporated as Rohr Corporation in 1969, and changed its name to Rohr Industries, Inc. in 1971. In the 1960s and 1970s, Rohr Industries made a foray into mass transit equipment manufacturing. It manufactured railcars for Bay Area Rapid Transit (BART) in

391-453: The helicopter. They have also designed the F-15 fighter jet, which has two engines instead of one for maximum speed. This particular aircraft can reach speeds of Mach 2.5. It also happens to be the 8th fastest aircraft ever built. The Boeing C-17 Globemaster 3 uses size and a very large design to carry cargo. It has 4 powerful engines and a special T-tail designed by Boeing for precise control of

414-406: The integrity of the actual design of an aircraft. It is very accurate, and it will increase the development of materials as the test is much faster than traditional testing methods. It can also be used to predict the behavior of materials under certain stressful conditions that might make it fail while in use. Universal Testing Machine A universal testing machine ( UTM ), also known as

437-400: The mechanical properties of materials for design, quality control, and research purposes. Several variations are in use. Common components include: The set-up and usage are detailed in a test method , often published by a standards organization . This specifies the sample preparation, fixturing, gauge length (the length which is under study or observation), analysis, etc. The specimen

460-406: The name reflects that it can perform many standard tests application on materials, components, and structures (in other words, that it is versatile). An electromechanical UTM utilizes an electric motor to apply a controlled force, while a hydraulic UTM uses hydraulic systems for force application. Electromechanical UTMs are favored for their precision, speed, and ease of use, making them suitable for

483-463: The plane flying at a set altitude, so they could drop whatever they needed to in the battlefield without any complications. This allowed for precise troop placement which could be the difference between victory and defeat in a battle. It also talks about different cheaper materials for the prototype which were heavier and used a honeycomb pattern. The cheaper materials were too heavy, and the Air Force

SECTION 20

#1732786716649

506-476: The unusually large aircraft. There is a new aircraft material that is 20% lighter than other conventional aircraft materials. However FSW aluminum -alloy which is much heavier than this new material, is more advantageous as opposed to using the new CFRP black constructions. The aluminum is more understood and can be crafted to almost exact precision as opposed to the CFRP, which is very hard to shape. The weight of

529-399: Was not happy that Boeing did not meet the Air Force's expectations on the prototype even though the Air Force was aware that they would be using different materials in the production of the actual aircraft. The Apache helicopter that Boeing makes is designed so the front of the helicopter is very narrow. Not only does it create less drag, but it is a smaller target for infantry units to hit

#648351